Often, the solution is administered in what is called a drip, which means the medicine of any sort drips into the IV site at planned intervals, through a tube. In many cases people have a continuous drip, where medication or fluids go in at regular times until the bag of medicine or fluids is empty.
As you can see, muscle contraction is regulated by the level of calcium ions in the cytoplasm. In skeletal muscle, calcium ions work at the level of actin (actin-regulated contraction). They move the troponin-tropomyosin complex off the binding sites, allowing actin and myosin to interact.
They affect the transport of water through cell membranes by osmosis. They are also part of the hydrogencarbonate buffer system. Potassium ions, K+, are the main cations in intracellular fluids. They contribute to the transmission of nerve impulses and muscle contraction. Magnesium ions, Mg2+, are important because of their role in the normal functioning of muscle and nerve tissue, bone formation and as a component of many coenzymes. A normal diet provides sufficient quantities of calcium, sodium, potassium and magnesium ions.